PD178016GC-051_15 Datasheet, PDF (69/96 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCONTROLLER WITH BUILT-IN PRESCALER, PLL FREQUENCY SYNTHESIZER, AND IF COUNTER FOR AUTOMOTIVE FM/MW/LW RADIO APPLICATIONS

µPD178016GC-051
6.4 Key Data Input/Output
The input and output of key data to and from the µPD16431A are shown below.
KEYREQ
LCD STB
LCD_DAT
Command
D0
D1
D3
LCD CLK
Command : 10000101 (status command (key data readout))
D0 to D3 : 00000000 (display data)
|
11111111
After the status command is send, key data is read from the LCD_DAT pin.
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